Siem Reap to Koh Samui

1 ways to travelfastest 2h 15mfly from €195
Photo: Lera Ginzburg / Unsplash

How the cheapest fare moved

Aug 24: €230 €230 Aug 19 Aug 24 low €205 · high €230

Departure-day prices · November 2026 Siem Reap → Koh Samui

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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.

Return-day prices · November 2026 Koh Samui → Siem Reap

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Best time to visit Koh Samui — climate

Jan: ~28°C daytime, 16 rainy days 28° JanFeb: ~29°C daytime, 15 rainy days 29° FebMar: ~30°C daytime, 15 rainy days 30° MarApr: ~31°C daytime, 18 rainy days 31° AprMay: ~30°C daytime, 25 rainy days 30° MayJun: ~31°C daytime, 19 rainy days 31° JunJul: ~33°C daytime, 13 rainy days 33° JulAug: ~31°C daytime, 21 rainy days 31° AugSep: ~31°C daytime, 20 rainy days 31° SepOct: ~30°C daytime, 29 rainy days 30° OctNov: ~29°C daytime, 21 rainy days 29° NovDec: ~29°C daytime, 15 rainy days 29° Dec

Best value: Nov — fares from €195 and ~29°C daytime.

Flights from Siem Reap to Koh Samui start around €195 (typically 1 stop). Range seen recently: €195–230, based on 4 fares found by travellers.

Fly (from €195)
2h 15mduration
€195–230recent fares
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Cheapest cached fares Siem Reap → Koh Samui; typically 1 stop (e.g. FD). · Based on 4 fares found by travellers in the last 48h

Cheapest round trips to Koh Samui

Fares found by travellers in the last 48 hours — refreshed daily.

Sep 17 – Sep 24 Bangkok Airways · 1 stop · 2h 40m €463 Book

Weather in Koh Samui

Wed 🌦️ 31° 27° 💧34%
Thu 🌦️ 32° 27° 💧83%
Fri ⛈️ 31° 26° 💧86%
Sat ⛈️ 30° 26° 💧84%
Sun 🌦️ 29° 25° 💧76%
Mon 🌦️ 29° 25° 💧67%
Tue 🌦️ 31° 27° 💧56%

In Nov, Koh Samui typically sees ~29°C daytime highs and 21 rainy days.

Where to stay in Koh Samui

3★+ hotels from €25/night (39 hotels sampled, ~3 weeks out).

COSI Samui Chaweng Beach hotel · Koh Samui
from €25/night★ 3
Escape Beach Resort hotel · Koh Samui
from €26/night★ 3
Montien House Chaweng Beach Resort hotel · Koh Samui
from €40/night★ 3

Good to know

Time differenceSame time zone
Time in the air2h 40m

Things to do in Koh Samui

Top-rated tours and tickets from €47 — book ahead for the popular ones.

Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.

About Koh Samui

Ko Samui (เกาะสมุย), often called just Samui (สมุย) is an island of great natural beauty and variety in the Gulf of Thailand. The palm-fringed shoreline and coconut and fruit cultivation of the coastal lowlands rise to a central granite massif, the slopes of which are cloaked in virgin rainforest.

Read the full Koh Samui guide

Guide content from Wikivoyage contributors (CC BY-SA).

Round out the trip

Popular from Siem Reap

Cheapest destinations travellers searched recently — refreshed daily.

Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo; exchange rates: ECB reference. Data updated 2026-08-26. Some links earn Stayonomy a commission at no cost to you.